One of the requirements for inferring local mantle redox states via zircon Ce/Ce* oxybarometry and Ti-in-zircon thermometry is to select mantle-equilibrated zircon (i.e., unaltered magmatic zircon without interaction to hydrosphere). Traditional protocols for identifying mantle-equilibrated zircon require a comprehensive examination of whole rock geochemistry in addition to zircon morphology, texture, and trace element and isotopic measurements to obtain information for zircon saturation context, source melt petrogenesis, and post-magmatic history. This study proposes a simple filter scheme for selecting mantle-equilibrated zircon using trace element systematics alone (P, Ti, Y, Nb, REE, Hf, Th, U). A total of 13 filtering criteria are synthesized from previous studies based on simulations, experiments, and compiled global datasets, all of which help to provide geological context and ultimately constrain the inferred melt redox state from three perspectives: (1) mineral inclusions; (2) source melt petrogenesis; and, (3) zircon saturation context. The filter scheme presented here, which is based on detailed classifications of zircon morphology/texture and host rock compositions of 2317 zircon analyses from 30 independent references, is shown to distinguish non-magmatic zircon (Group III), magmatic zircon with significant inclusions and/or sourced from highly enriched source melt (Group II), and mantle-equilibrated zircon (Group I). A case study of Group I mantle-equilibrated zircon from Greenland suggests that their respective mantle source has reached FMQ -0.5 since ca. 2950 Ma. Future applications of this filter scheme include studies of out-of-context detrital and/or xenocrystic zircon.